CN103076820B - A kind of experimental provision being applicable to realize solid phase oxygen control reaction - Google Patents
A kind of experimental provision being applicable to realize solid phase oxygen control reaction Download PDFInfo
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- CN103076820B CN103076820B CN201310019545.2A CN201310019545A CN103076820B CN 103076820 B CN103076820 B CN 103076820B CN 201310019545 A CN201310019545 A CN 201310019545A CN 103076820 B CN103076820 B CN 103076820B
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- lead bismuth
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Abstract
Be applicable to the experimental provision realizing solid phase oxygen control reaction, control oxygen concentration in liquid lead bismuth by submergence intermittent between Mass Control interchanger and liquid lead bismuth.The ingehious design of this device solves being tightly connected of device, dismantles the problems such as difficulty, and it is made up of parts such as mass exchanger, corrugated tube, oxygen analyser, thermopair, seal flange, entry/exit gas port, tank bodies.The present invention adopts corrugated tube to connect sealing, and realize the lifting of mass exchanger, oxygen analyser, liquid level gauge, like this, device is without the need to surveying instruments such as installation quality interchanger, oxygen analysers under high-temperature lead bismuth melting state; Use corrugated tube lifting mass exchanger simultaneously, can be intermittent by mass exchanger submergence liquid lead bismuth, realize the control of liquid lead bismuth oxygen concentration in tank body.
Description
Technical field
The present invention relates to a kind of pre-grinding device for oxygen control technology in Accelerator Driven Subcritical heap (ADS), for the oxygen control techniques of following ADS reactor provides simple research platform and tachnical storage.
Background technology
Liquid lead bismuth alloy LBE (Leadbismutheutectic) is the preferred material of hash target and the important candidate material of cooling medium of advanced fast reactor in the subcritical system (ADS) of Accelerator driven.The thermophysical property special due to liquid lead bismuth and chemical property, such as low melting point (123.5 DEG C), higher boiling (1670 DEG C), high heat conductance, low-steam pressure and do not have violent reaction etc. with air and water, liquid lead bismuth is worldwide extensively studied as the cooling medium of ADS spallation target and advanced fast reactor at present.
But it becomes its maximum restriction of extensively using to the corrosivity of steel.Liquid lead bismuth has very severe corrosive to the steel be directly exposed to wherein under middle hot environment.In liquid lead bismuth, in order to prevent the corrosion of material from must there is certain active dissolved oxygen DO, the activity of dissolved oxygen DO, sufficiently mainly with avoiding the thermodynamics of material oxidation layer to dissolve, plays the effect of protective material.But the oxygen activity that will generate lower than PbO, will cause solid-state PbO to separate out if exceeded, and forms oxide residue, pollutes whole liquid lead bismuth system simultaneously.In a word, the operating conditions of liquid lead bismuth must ensure the kinetic balance of oxide layer on surface of material and prevent oxide precipitation from generating.Due to above reason, the dissolved oxygen DO in monitor and forecast liquid lead bismuth is necessary.The method of current control oxygen concentration mainly contains vapor phase method and solid phase method two kinds.Wherein solid phase method method only Russian grasp technique, due to the military use that technique is possible, announced can be for reference data very limited.
Russia's physics and power engineering research institute devise simple static solid phase oxygen control device.Their device does not use corrugated tube, and in plumbous bismuth, insert mass exchanger, lambda sensor etc. needs at high temperature plumbous bismuth to cover ring flange again after melting, and need operate, as in glove box, add the operation easier in experimentation under argon shield environment.The present invention will overcome this difficult point.Meanwhile, the demand of oxygen control techniques just, a kind of experimental provision being applicable to realize solid phase oxygen control reaction can provide oxygen control techniques to study Important Platform.
Summary of the invention
The technical matters that quasi-solution of the present invention is determined is: overcome the deficiencies in the prior art, provides a kind of security good and structure is simple, the experimental provision being applicable to realize oxygen control reaction of convenient operation.
The technical matters scheme that quasi-solution of the present invention is determined is: a kind of experimental provision being applicable to realize solid phase oxygen control reaction, comprising: air intake opening 1, vacuum orifice 2, thermopair 3, multiple spot liquid level gauge 4, mass exchanger 5, second corrugated tube 6, oxygen analyser 7, first corrugated tube 8, gas outlet 9, rain glass 10 and tank body 11; Described mass exchanger 5 is connected on ring flange by the first corrugated tube 8, being elevated by the second corrugated tube 6 inserts in tank body 11 again, by the second corrugated tube 6, mass exchanger 5 lower end is controlled on liquid lead bismuth liquid level, mass exchanger 5 controls under liquid lead bismuth liquid level by lifting second corrugated tube 6 or the first corrugated tube 8, like this by realizing the control of oxygen concentration in the intermittent submergence liquid lead bismuth of mass exchanger 5 by intermittence again; Described oxygen analyser 7 is connected on ring flange by cutting ferrule and pipe, multiple spot liquid level gauge 4 passes through little Flange joint on ring flange, thermopair 3 is connected on ring flange by cutting ferrule and pipe, and be all inserted in tank body 11 by the second corrugated tube 6 lifting, measure the temperature of the oxygen concentration of liquid lead bismuth, the degree of depth of insertion and liquid lead bismuth respectively; Described air intake opening 1, gas outlet 9 and vacuum orifice 2 are directly welded on ring flange and are communicated with tank body 11, and all join a ball valve; Described rain glass 10 is connected to reaction chamber by pipe on ring flange, measures the air pressure of whole reaction chamber.
Described multiple spot liquid level gauge 4 has 4 liquid-level probes, and the longest liquid level gauge is contour with oxygen analyser 7 bottom; Contour bottom the liquid level gauge of vice-minister and mass exchanger 5; Secondary short liquid level gauge and mass exchanger 5 center contour; The shortest liquid level gauge and mass exchanger top are contour; By regulating the second corrugated tube 6, when the shortest liquid level gauge has just contacted in liquid lead bismuth, illustrating in the whole submergence liquid lead bismuth of mass exchanger 5, when vice-minister's liquid level gauge has just left liquid lead bismuth liquid level, illustrating that mass exchanger departs from liquid lead bismuth completely.
The advantage that the present invention compared with prior art has is as follows:
(1) overall construction design of the present invention is simple, and security is good, does not need to remove and install under heated condition in special closed container.Solve being tightly connected of device, dismantle the problems such as difficulty, the present invention is easy to realize and operation, can be commonly used to plumbous bismuth oxygen control experimental study.
(2) the present invention is realized in the intermittent submergence liquid lead bismuth of mass exchanger by two sections of corrugated tubes, thus realize oxygen exchange control oxygen concentration in liquid lead bismuth.First by adjustment second corrugated tube, mass exchanger is adjusted on liquid lead bismuth liquid level, at this moment oxygen analyser has inserted in liquid lead bismuth, again by continuing adjustment second corrugated tube or regulating the first corrugated tube (length that the first corrugated tube regulates equals the height of mass exchanger) by intermittent for mass exchanger submergence liquid lead bismuth, in tank body, liquid lead bismuth oxygen concentration reaches control.Like this, without the need to surveying instruments such as installation quality interchanger, oxygen analysers under high-temperature lead bismuth melting state.
(3) the present invention uses corrugated tube to be elevated mass exchanger, can be intermittent by mass exchanger submergence liquid lead bismuth, realizes the control of liquid lead bismuth oxygen concentration in tank body.The control of oxygen concentration can be realized so for a long time, can be static corrosion experiment etc. and rational oxygen concentration is provided.
(4) oxygen analyser of the present invention is connected on ring flange by cutting ferrule and pipe, is connected and is inserted in tank body liquid lead bismuth, measure the oxygen concentration in liquid lead bismuth by the second corrugated tube.The free convenient disassembly oxygen analyser of cutting ferrule pipe is changed, and when corrugated tube ensures that liquid lead bismuth cools, oxygen analyser and plumbous bismuth are discontiguous, avoid oxygen analyser ceramic pipe to deposit in Solid Lead bismuth.
(5) gas outlet of the present invention adds a pressure relief valve, and during adjustment corrugated tube, gaseous tension increases like this, discharges in time by blowdown valve, and inside will not have larger pressure existence like this, use rain glass detected pressures simultaneously, the security of guarantee corrugated tube.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is mass exchanger schematic diagram in the present invention.
Embodiment
As shown in Figure 1, the present invention includes air intake opening 1, vacuum orifice 2, thermopair 3, multiple spot liquid level gauge 4, mass exchanger 5, second corrugated tube 6, oxygen analyser 7, first corrugated tube 8, gas outlet 9, rain glass 10, tank body 11.First load in tank body by Solid Lead bismuth, charge weight is that the 4/5(accounting for tank body capacity after melting asks by the calculating of the parameter such as quality, density); After first corrugated tube 8 is stretched to maximum length place with the second corrugated tube 6, end flanges under second corrugated tube is connected after sealing with tank body 11, by vacuum orifice 2, device is vacuumized about 30min, then vacuum orifice is closed, fill the argon gas of 99.999% to 0.12MPa, again vacuumize, repeatedly heat tank body 11 for 3 times afterwards and Solid Lead bismuth is melted; After plumbous bismuth melts, the second corrugated tube 6 is down regulated, adjustment second corrugated tube 6 is stopped after vice-minister's liquid level gauge just contacts with liquid lead bismuth, at this moment, mass exchanger 5 does not contact with plumbous bismuth, and oxygen analyser 7, thermopair 3 have inserted the temperature and oxygen concentration of surveying liquid lead bismuth in liquid lead bismuth respectively; Treat that in tank body 11, oxygen concentration measurements is lower than the oxygen concentration value required, stop regulating after the shortest liquid level gauge just contacts with liquid lead bismuth by regulating the second corrugated tube 6, at this moment in the complete submergence liquid lead bismuth of mass exchanger 5, realize the transmission of liquid lead bismuth oxygen between mass exchanger 5 and tank body 11, be converted into after oxygen analyser 7 outgoing signal oxygen concentration in suitable scope time, return original state; Or treat that in tank body 11, oxygen concentration measurements is lower than the oxygen concentration value required, regulate the first corrugated tube 8, length is regulated to be the height of mass exchanger, at this moment mass exchanger 5 is also completely in submergence liquid lead bismuth, realize the transmission of liquid lead bismuth oxygen between mass exchanger 5 and tank body 11, be converted into after oxygen analyser 7 outgoing signal oxygen concentration in suitable scope time, return original state.
As shown in Figure 2; for the structural representation of mass exchanger 5, primary structure comprises: PbO particle A10 in the outlet of connection handle A1, outer protective cover A2, liquid lead bismuth A3, internal protection layer A4, outlet buffering A5, reaction vessel outlet A6, liquid lead bismuth import A7, switch room A8, metal filter A9, reaction vessel.Wherein A1 is connected with connecting link, liquid metal enters into switch room A8 through arriving reaction vessel after metal filter A9 and PbO particle generation oxygen exchanges from A7, after exchanging, liquid metal enters buffer zone A5 through after the metal filter of lower end by reaction vessel outlet A6 again, export outflow from A3 after promoting with whole mass exchanger and enter tank body, realize oxygen concentration and exchange.A2 is the outer protective cover of reaction vessel, and A4 is protective cover in reaction vessel, and metal filter is fixed between interior protective cover exactly.Start mass exchanger overall higher than liquid lead bismuth liquid level, then by adjustment second corrugated tube 6 or the first corrugated tube 8 by its whole submergence liquid lead bismuth, again mass exchanger is promoted after PbO fully mixes with liquid lead bismuth, after there is oxygen exchange, liquid lead bismuth enters tank body from outlet A3 outflow, reaches the object of control oxygen.
Non-elaborated part of the present invention belongs to techniques well known.
And the above; be only the embodiment in the present invention; but protection scope of the present invention is not limited thereto; any people being familiar with this technology is in the technical scope disclosed by the present invention; the conversion or replacement expected can be understood; all should be encompassed in and of the present inventionly comprise within scope, therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. be applicable to the experimental provision realizing solid phase oxygen control reaction, it is characterized in that comprising: air intake opening (1), vacuum orifice (2), thermopair (3), multiple spot liquid level gauge (4), mass exchanger (5), the second corrugated tube (6), oxygen analyser (7), the first corrugated tube (8), gas outlet (9), rain glass (10) and tank body (11); Described mass exchanger (5) is connected on ring flange by the first corrugated tube (8), insert in tank body (11) by the second corrugated tube (6) lifting again, by the second corrugated tube (6), mass exchanger (5) lower end is controlled on liquid lead bismuth liquid level, mass exchanger (5) controls under liquid lead bismuth liquid level by lifting second corrugated tube (6) or the first corrugated tube (8) by intermittence again, like this by realizing the control of oxygen concentration in the intermittent submergence liquid lead bismuth of mass exchanger (5); Described oxygen analyser (7) is connected on ring flange by cutting ferrule and pipe, multiple spot liquid level gauge (4) by little Flange joint on ring flange, thermopair (3) is connected on ring flange by cutting ferrule and pipe, and all pass through the second corrugated tube (6) lifting be inserted in tank body (11), measure the temperature of the oxygen concentration of liquid lead bismuth, the degree of depth of insertion and liquid lead bismuth respectively; Described air intake opening (1), gas outlet (9) and vacuum orifice (2) are directly welded on ring flange and are communicated with tank body (11), and all join a ball valve; Described rain glass (10) is connected to reaction chamber by pipe on ring flange, measures the air pressure of whole reaction chamber;
Described multiple spot liquid level gauge (4) has 4 liquid-level probes, and the longest liquid level gauge is contour with oxygen analyser (7) bottom; The liquid level gauge of vice-minister and mass exchanger (5) bottom contour; Secondary short liquid level gauge and mass exchanger (5) center contour; The shortest liquid level gauge and mass exchanger top are contour; By regulating the second corrugated tube (6), when the shortest liquid level gauge has just contacted in liquid lead bismuth, illustrate in the whole submergence liquid lead bismuth of mass exchanger (5), when vice-minister's liquid level gauge has just left liquid lead bismuth liquid level, illustrate that mass exchanger departs from liquid lead bismuth completely;
Described mass exchanger (5) comprising: connection handle (A1), outer protective cover (A2), liquid lead bismuth outlet (A3), interior protective cover (A4), outlet buffer zone (A5), reaction vessel outlet (A6), liquid lead bismuth import (A7), switch room (A8), metal filter (A9), PbO particle (A10) in reaction vessel, wherein connection handle (A1) is connected with connecting link, liquid metal enters into switch room (A8) from liquid lead bismuth import (A7) and arrives reaction vessel afterwards through metal filter (A9) and PbO particle generation oxygen exchanges, after exchanging, liquid metal enters outlet buffer zone (A5) through after the metal filter of lower end by reaction vessel outlet (A6) again, export outflow from liquid lead bismuth outlet (A3) after promoting with whole mass exchanger and enter tank body, realize oxygen concentration to exchange, metal filter (A9) is fixed between interior protective cover (A4), start mass exchanger overall higher than liquid lead bismuth liquid level, then by adjustment second corrugated tube (6) or the first corrugated tube (8) by its whole submergence liquid lead bismuth, again mass exchanger is promoted after PbO fully mixes with liquid lead bismuth, after there is oxygen exchange, liquid lead bismuth flows out from liquid lead bismuth outlet (A3) and enters tank body (11), reaches the object of control oxygen.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392755B (en) * | 2014-09-24 | 2017-02-15 | 中国科学院合肥物质科学研究院 | Liquid-state heavy metal oxygen concentration control solid-liquid exchange reaction apparatus under flowing working condition |
| CN104614285B (en) * | 2015-02-05 | 2018-02-09 | 中国科学院合肥物质科学研究院 | Oxygen migration rate measurement device in a kind of liquid metal |
| CN105739552B (en) * | 2016-02-03 | 2018-08-28 | 华北电力大学 | For liquid lead or the oxygen control devices and methods therefor of liquid lead bismuth alloy circuit system |
| CN111398149B (en) * | 2020-04-30 | 2022-06-10 | 中国核动力研究设计院 | Static immersion test device and test method for liquid lead bismuth environment |
| CN114864119A (en) * | 2022-04-24 | 2022-08-05 | 中国原子能科学研究院 | Oxygen content control device and reaction system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735737A (en) * | 2012-06-26 | 2012-10-17 | 中国科学院合肥物质科学研究院 | Liquid state alloy oxygen concentration sensor |
| CN102749949A (en) * | 2012-06-29 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Experimental apparatus suitable for realizing oxygen-controlled reaction |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735737A (en) * | 2012-06-26 | 2012-10-17 | 中国科学院合肥物质科学研究院 | Liquid state alloy oxygen concentration sensor |
| CN102749949A (en) * | 2012-06-29 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Experimental apparatus suitable for realizing oxygen-controlled reaction |
Non-Patent Citations (1)
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| 液态铅铋氧浓度测量技术初步研究;王改英等;《核科学与工程》;20120630;第32卷(第2期);165-169 * |
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